Metabolism: all chemical reactions within a cell
Answer:
The most obvious one is that asexual reproduction is where an organism gives birth by itself. Normal reproduction includes two organisms mating.
I know nothing else.
Your answer would be Why are Sea Lampreys a problem in the Great Lakes?
In the text, it explains the answer for this question. For the other three questions, it's asking for a factor of the paragraph rather than the whole thing. The whole paragraph explains the answers for all of the questions, so it's best to ask why are they causing problems.